兑水 发表于 2009-9-12 10:40:53

ASTM B 359-2002 具有整体散热叶片的冷凝器及热交换器用无缝...

B359/B359M-02 Standard Specification for Copper and Copper-Alloy Seamless Condenser and Heat Exchanger Tubes With Integral Fins
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